Avamprogetto 2a

Technical requirements for the handover interfaces for the execution of telecommunications surveillance

Clause Selection of ETSI options for Additional requirements

ETSI TS Switzerland

101 671

V3.12.1

5.1 Manual/Electronic handover interface 1 (HI1)

An electronic handover interface from See section 4

the LEMF to the obligated party’s

technical infrastructure for direct

administration of interception

measures without the involvement of

the obligated party is not

implemented in Switzerland.

Events regarding the management of

an interception (e.g. activation and

deactivation) and error

communication must be delivered.

6.2.1 Network identifier (NID)

The NID is composed of 5 digits: See section 6.3.2.1

NWO/AP/SvP identifier (Operator

identifier).

PTSS provides the Operator

identifier.

8.1 Data transmission protocol

FTP is used for IRI data, HI1 See section 6.3.8

notifications and packetised CC such

as SMS and UUS (see ETSI TS 101

671 V3.12.1 Annex A.4.2.).

ROSE is not allowed.

The FTP connection must be closed

immediately after data transmission.

11 Security aspects

For CC over ISDN, CLIP and COLP CUG does not need to be implemented. services are used.

Annex A: Circuit switched network handover A.1.3 Usage of identifiers

Options “IRI and CC” and “only IRI”

option must be supported. Option

“only CC” does not need to be

implemented.

A.3.2.1 Control information for HI2

The timestamp must include official See section 6.3.6

local time and related DST indication

or UTC time.

A.4.1 Delivery of Content of Communication

For relating CC data to other H- CC data must be A-law coded in Interfaces the subaddress service will compliance to ITU-T G.711 (11/88), i.e. be used as specified in ETSI TS 101 in case of different coding in the original 671 V3.12.1 Annex E instead of the channel (e.g. GSM) the mediation user-to-user signalling. function must ensure conversion to Alaw coding.